LTC3410-1.875

PRODUCTION

2.25MHz, 300mA Synchronous Step-Down Regulator in SC70

Data Sheet Product Selection Table
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Overview

  • High Efficiency: Up to 93%
  • Very Low Quiescent Current: Only 26µA
  • Low Output Voltage Ripple
  • 300mA Output Current at VIN = 3V
  • 380mA Minimum Peak Switch Current
  • 2.5V to 5.5V Input Voltage Range
  • 2.25MHz Constant Frequency Operation
  • No Schottky Diode Required
  • Stable with Ceramic Capacitors
  • Shutdown Mode Draws <1µA Supply Current
  • ±2% Output Voltage Accuracy
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Overtemperature Protected
  • Available in Low Profile SC70 Package

The LTC3410-1.875 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 26µA, dropping to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3410-1.875 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.

Switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors. The LTC3410-1.875 is specifically designed to work well with ceramic output capacitors, achieving very low output voltage ripple and a small PCB footprint.

 The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. The LTC3410-1.875 is available in a tiny, low profile SC70 package.


 Vout Burst Mode
LTC3410 Adj. Down To 0.8V Yes
LTC3410B Adj. Down To 0.8V No
LTC3410-1.875 Fixed 1.875V Yes

Applications

  • Cellular Telephones
  • Wireless and DSL Modems
  • Digital Cameras
  • MP3 Players
  • Portable Instruments
LTC3410-1.875
2.25MHz, 300mA Synchronous Step-Down Regulator in SC70
Efficiency and Power Loss vs Output Current Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

Data Sheet

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Power System Management (PSM) & Sequencers 1
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Switching Regulators & Controllers 1
LTC3880
RECOMMENDED FOR NEW DESIGNS Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3410
  • LTC3410-1.2
  • LTC3410-1.65
  • LTC3410-1.875
  • LTC3410B
  • LTC3410B-1.2
  • LTC3410B-1.875

LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:

  • LTC3410
  • LTC3410-1.875
  • LTC3410B
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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